| 1 | ÷ | 3 | × | ( | x | − | 1 | ) | ( | x | − | 1 | ) | = | 4 | x |
| Left side of the equation = | 1 3 | ( | x | − | 1 | ) | ( | x | − | 1 | ) |
1 3 | ( | x | − | 1 | ) | ( | x | − | 1 | ) | = | 4 | x |
| Left side of the equation = | 1 3 | x | ( | x | − | 1 | ) | − | 1 3 | × | 1 | ( | x | − | 1 | ) |
| = | 1 3 | x | ( | x | − | 1 | ) | − | 1 3 | ( | x | − | 1 | ) |
| = | 1 3 | x | x | − | 1 3 | x | × | 1 | − | 1 3 | ( | x | − | 1 | ) |
| = | 1 3 | x | x | − | 1 3 | x | − | 1 3 | ( | x | − | 1 | ) |
| = | 1 3 | x | x | − | 1 3 | x | − | 1 3 | x | + | 1 3 | × | 1 |
| = | 1 3 | x | x | − | 1 3 | x | − | 1 3 | x | + | 1 3 |
| = | 1 3 | x | x | − | 2 3 | x | + | 1 3 |
1 3 | x | x | − | 2 3 | x | + | 1 3 | = | 4 | x |